Improvement in ore-crushers



I 2 Sheets-Sheet 1.

P. W. GATES. Ore-Crusher.

No. 202,940. Patented April 30,1878.

2 Sheets-Sheet 2.

P. W. GATES. Ore-Crusher.

No. 202,940. ,Pgented April 30, 1878.

Mdnedsesi' UNITED STATES PATENT OEEIoE.

PHILETUS W. GATES, OF CHICAGO, ILLINOIS, ASSIGNOR TO HIMSELF, ABI- GAILE. GATES, RYERSON D. GATES, AND PHILETUS W. GATES, JR., OF

SAME PLACE.

IMPROVEMENT IN ORE-CRUSHERS.

Specification forming part of Letters Patent No. 202,940, dated April30, 1878; application filed November 16, 1877.

To all whom it may concern:

Be it known that I, PHILETUS W. GATES, of Chicago, in the county of Cookand State of Illinois, have invented a new and useful Improvement inMachines for Breaking Stone; and I do hereby declare that the followingis a full, clear, and exact description of the same, reference being hadto the accompanying drawings, forming part of this specification, inwhich- Figure 1 is a side view of my improved stone-breaking machine.Fig. 2 is a vertical central section of the same. Fig. 3 is a top viewof the same, with cap and hopper removed. Fig. 4 is a sectional diagramof the machine as it appears when stone to be broken is not between itscrushing-surfaces. Fig. 5 is a like diagram of the machine as it appearswhen stone to be broken is between its crushing-surfaces.

The nature of my invention consists in the combination of a crushinganddischarging cylinder, a vibrating crushing-j aw, a revolving cam onthe driving-shaft, a screw-wheel on the shaft of the cylinder, abevel-wheel on the driving-shaft, and a worm-cylinder and a bevel-wheelon a shaft, the worm-cylinder gearing with the worm-wheel of thecrushing-cyliiider, and the bevel-wheel of the shaft of the cylinderwith the bevel-wheel of the cam-shaft. By this combination the vibratingjaw makes a greater number of vibrations than the revolutions of thedriving-shaft, and a very slow continuous revolution of thecrushing-cylinder is secured.

In the accompanying drawings, a revolving cylinder, A, a vibrating jaw,B, with frictionroller B, a cam, O, with three projections, c, adriving-shaft, D, with abalance-wheel, E, a sustaining-bar, G, with aspring, G, for the jaw to bear against, two longitudinal tie-rods, M,for strengthening the frame, two lateral shields, N, for retaining theuncrushed stone within the crushing-space, and two reversibleeccentric-slides, B serving'as adjustable supports of the pivot B of thejaw, are shown on a frame, F. These parts named, as well as their frame,are all constructed to operate in the same manner as described and shownin my patent granted October 16, 1877, and N 0. 196,082, and thereforeneed not be more particularly referred to here.

On one end of the shaft D of the cam O a bevel-wheel, H, is fastened,and on one end of the shaft A of the crushing-cylinder A a worm-wheel,I, is fastened. J is an inclined shaft, supported on one side of theframe F in boxes b b, so as to revolve. On this shaft, under theworm-wheel, a worm, K, is applied, which gears with the worm-wheel, andon the upper end of said shaft a bevel-wheel, L, is fastened, whichgears with the bevel-wheel H, as shown.

The stone to be crushed is introduced through the hopper d at the top ofthe frame F, between the crushing-surfaces of the cylinder A and jaw B.The cylinder and cam are revolved, the former by the worm and screwgearing, and the latter by the bevel-wheels. The weight of the stone,together with the action of the ribs or knobs of the cylinder upon it asthe cylinder moves, causes the jaw to overcome the force of the springG, and to fall back from the position shown in Fig. 4 to the positionshown in Fig. 5, and when this takes place the projections of the camstrike the jaw, and cause it to move up to its work three times duringeach revolution of the driving-shaft. The cylinder makes a very slowmotion during the crushing operation, and thereby aids in feeding downthe stone to be crushed in proper manner, and assists in the dischargeof the crushed stone at the bottom of the flaring crushing-space 1",which is between the jaw and the cylinder. The crushed orbroken stone isconducted by a chute through the aperture f in the end of the frame F.When the feeding of the stone ceases, and the machine is still running,the cam cannot strike the jaw and wear out its friction-roller Binasmuch as the spring G forces the jaw forward to its normal position.(Shown in Fig. 4.) If it is desired, the cam-projections 0 may bedecreased or increased in number.

The main advantage of my present invention is the production of a veryslow rotary motion of the crushing-cylinder, while a very rapid cam C,substantially as and for the purpose vibration of the vibrating jaw iseffected, and herein described.

at the same time a very compact machine is Witness my hand in the matterof my approduced. plication for a patent for a stone-breaking ma- What Iclaim as new, and desire to secure chine this 2d day of June, A. D.1877.

by Letters Patent, is- PHILETUS W. GATES.

The combination of the worm-wheel I, worm- WVitnesses:

cylinder K, shaft J, and bevel-wheels H L with JOHN \V. MABBS,

the crushing-cylinder A, vibrating jaw B, and CHARLES ANDERSON.

